When I try to download Ubuntu 12.04 using the Windows installer (Wubi) through a proxy server which requires proxy authentication, after I choose the Ubuntu installation size, username and password, when I click the Install button, I get this error:

An error occurred:
Could not retrieve the required disk image files
For more information, please see the log file:
c:\users\(myusername)\appdata\local\temp\wubi-12.04-rev266.log

2 Answers
2

First try to extract the installation files from the .iso. Then put the .iso file into the folder where its contents were extracted. For example, put ubuntu-12.04-desktop-i386.iso (or whatever your .iso file is called) into a folder named ubuntu-12.04-desktop-i386 that was created by extracting the .iso itself. Then try installing again.

If you don't have the ability to extract the contents of an .iso file, you can do this in your Windows system with 7-Zip.

Extracting files from the ISO image isn't necessary (nor likely to be helpful): wubi.exe will recognize the ISO if put in the same directory as it (assuming the ISO has not been renamed and there are no other ISOs in the same folder and named like Ubuntu ISO images).
–
Eliah KaganAug 17 '14 at 17:08